Online PHP editor | output for Intbd

@ 2022-09-24T00:22:45Z

<?php
mb_substitute_character("none");

$input = 'あaいb';
$bytes_length = 10;
$encoding = "ISO-2022-JP";
$converted_str = mb_convert_encoding($input, $encoding, mb_internal_encoding());
var_dump(bin2hex($converted_str));
$cut_str = mb_strcut($converted_str, 0, $bytes_length, $encoding);
var_dump(bin2hex($cut_str));
$reconverted_str = mb_convert_encoding($cut_str, mb_internal_encoding(), $encoding);
var_dump($reconverted_str);

Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.14 - 8.1.32, 8.2.1 - 8.2.28, 8.3.0 - 8.3.21, 8.4.1 - 8.4.8: string(36) "1b244224221b2842611b244224241b284262" string(18) "1b244224221b284261" string(4) "あa"
Output for 8.1.0 - 8.1.13, 8.2.0: string(36) "1b244224221b2842611b244224241b284262" string(20) "1b244224221b2842613f" string(5) "あa?"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38: string(4) "6162" string(4) "6162" string(2) "ab"

preferences:dark modelive previewkey bindings